All DIY Calculators

Board-and-batten spacing

Calculate equal open gaps or center-to-center placement, plus a complete cut and position list.

Calculate an exact gap, required picket count, center spacing, material length, and every position.

Arrange multiple frame sizes, compare five layouts, and get exact frame centers and hook marks.

Estimate stock boards, rows, seams, waste, joist quantities, linear footage, and fasteners.

Convert rise, run, angle, span, ridge rise, or rafter length into complete roof geometry.

Enter a clear span and compare prescriptive 2×6 through 2×12 joists at common on-center spacing.

Estimate pavers, aggregate base, bedding and joint sand, edge restraint, slope, excavation, optional fabric and sealer, and project costs.

Calculate equal riser height, tread count, total run, stair angle, and straight-flight geometry with IRC reference checks.

Estimate rooms, deductions, waste, whole boxes, approximate pieces, surplus, underlayment, and cost for boxed plank and tile products.

Calculate level or stair-rail baluster count, exact clear gaps, centerline marks, installation positions, and material length.

Measure multiple beds and deductions, then estimate whole bags, bulk cubic yards, and supplier-adjusted rock tonnage.

Calculate equal openings, stile positions, rail pieces, molding quantities, and waste for four common panel treatments.

Balance perimeter cuts, compare tile- and grout-centered grids, combine areas, and estimate tiles, boxes, waste, and cost.